5.0 Verifying The Battery Voltage
Every three months, use an accurate voltmeter to measure the no-load voltage of the battery back-up assembly.
The measured voltage range should be within 27–34.5 volts when the batteries are at full charge.
If the no-load voltage is lower than 27 volts, measure the charging voltage supplied by the common equipment
cabinet. The measured charging voltage must be 35 volts maximum.
If the charging voltage is low or if the voltage of freshly-charged batteries is no greater than 30 volts, contact your
technical service representative.
Green Status Lights
On = Batteries fully charges (>32 V)
On = AC power on
= +34.5 GND
= +34.5 GND
= -34.5 Volts
= -34.5 Volts
Fuse 5 AMP slow blow type
On = Batteries low (>27 V)
On = Batteries under charged (>30 V)
{
{
PLUS002
Measured Voltage
(charger on and batteries fully charged)
Verifying The Battery Voltages
Installing The Switchable Battery Back Up Assembly
IMI89–197
Installing The Battery Back Up Assembly – 15
